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Application filed by Toth Imrich, Kollarik Dusan, Gustav GyurkovicsfiledCriticalToth Imrich
Priority to CS864750ApriorityCriticalpatent/CS265514B1/en
Publication of CS475086A1publicationCriticalpatent/CS475086A1/en
Publication of CS265514B1publicationCriticalpatent/CS265514B1/en